Re: [R] mean for each row

From: Hesen Peng <hesen.peng_at_gmail.com>
Date: Mon, 17 Mar 2008 13:58:16 +0800

How about rowSums(x)/ncol(x), where x is the matrix?

On Mon, Mar 17, 2008 at 1:48 PM, Roslina Zakaria <zroslina_at_yahoo.com> wrote:
> Hi r-users,
> How do find the mean for each row? Thank you in advance for your help.
>
>
> 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Day Totals

> 1 0.0 0.0 0.0 0.0 0.6 0.0 8.4 0.0 29.4 0.0 38.4
> 2 0.0 0.0 1.8 0.0 22.4 0.0 0.2 0.4 0.8 0.0 25.6
> 3 7.8 0.0 0.0 17.6 1.4 0.0 0.0 0.0 0.0 0.0 26.8
> 4 2.2 0.8 0.4 0.0 0.2 11.2 1.4 33.2 0.0 0.0 49.4
> 5 0.2 1.8 0.0 1.0 0.0 0.2 0.0 12.2 0.0 19.2 34.6
> 6 0.0 0.0 0.0 1.0 0.0 0.0 0.0 2.2 0.0 14.6 17.8
> 7 0.0 0.0 0.0 0.0 3.6 0.2 0.0 2.0 0.0 0.2 6.0
> 8 0.0 0.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0
> 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> 10 1.0 1.4 0.0 0.0 0.0 1.0 0.4 0.0 0.0 0.0 3.8

> 11 0.0 8.2 0.0 0.0 0.0 0.0 8.4 0.0 0.0 0.4 17.0
> 12 10.8 0.8 0.0 0.0 0.0 0.0 1.0 0.0 0.0 4.2 16.8
> 13 32.8 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.2 0.2 34.0
> 14 1.0 0.0 1.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.8
> 15 0.0 0.0 0.0 2.2 1.4 0.0 0.0 0.0 0.0 0.0 3.6
> 16 0.6 0.0 0.0 0.6 22.0 0.0 0.0 0.0 0.0 0.0 23.2
> 17 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.0 0.0 0.0 2.8
> 18 2.8 0.0 0.0 0.0 0.0 0.0 8.2 0.0 0.0 8.2 19.2
> 19 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.2 0.4
> 20 0.0 8.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.2
> 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.4

> 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.0 0.0 1.2
> 24 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 8.2 0.0 11.2
> 25 3.2 0.0 0.0 0.6 0.6 0.0 0.0 0.0 11.8 0.0 16.2
> 26 0.0 0.0 26.2 0.0 12.6 0.0 0.0 2.2 0.0 0.0 41.0
> 27 0.2 0.0 10.6 0.0 1.2 0.0 0.0 1.8 0.0 0.0 13.8
> 28 0.0 4.0 0.0 5.8 0.0 0.0 0.0 0.0 0.0 0.0 9.8
> 29 0.2 12.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.6
> 30 0.0 2.6 0.0 0.0 2.2 0.0 0.0 0.0 0.0 0.0 4.8
> 31 0.0 0.0 0.6 0.0 0.8 0.0 0.0 0.0 4.8 0.0 6.2
> Year Totals 62.8 40.2 51.2 29.8 70.0 12.8 30.8 57.2 55.2 47.6 457.6
>
>
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-- 
彭河森 Hesen Peng
Department of Statistics, Fudan University, Shanghai, P. R. C.
Tel: Mobile 86-13052231416 Dormitory 86-21-65647724 Home 86-23-68207912
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Received on Mon 17 Mar 2008 - 06:01:49 GMT

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